strategy comparison
Bull Put Spread vs Cash-Secured Put
Both are bullish put sales.
Side by side
Same eight dimensions for both structures — outlook, risk, Greeks, capital, complexity, and the IV environment each one wants.
| Dimension | Bull Put Spread | Cash-Secured Put |
|---|---|---|
| Outlook | bullish / neutral | neutral / bullish |
| Max profit | Premium received | Limited to premium received |
| Max loss | Width of spread - premium received | Strike price - premium (if stock goes to $0) |
| Breakevens | Short strike - premium received | Strike price - premium received |
| Greeks exposure | Positive delta; positive theta, short vega. | Short delta and vega, positive theta; gamma risk grows as the strike goes in the money. |
| Capital / margin | Spread width minus credit received, per contract. | Strike × 100 in reserved cash per contract. |
| Complexity | intermediate | beginner |
| Best IV environment | High IV rank — richer credit and IV contraction in your favor. | High IV rank — the premium pays properly for the wait; in low IV it rarely justifies the assignment risk. |
Payoff at a glance
Illustrative P/L at expiration for both structures at a $100 underlying. Exact strikes and premiums are on each strategy's guide.
The verdict
When to choose which
Both are bullish put sales. Choose the bull put spread when you want defined risk and less capital tied up — the long put caps the loss and slashes the requirement; choose the cash-secured put when you would happily buy the stock at the strike and want the full premium of an unhedged sale. The spread trades assignment potential and premium for a known worst case.
Frequently asked questions
How much less capital does the bull put spread need?
Instead of reserving the full strike × 100, the spread only reserves width minus credit. A $5-wide spread might tie up a few hundred dollars where the cash-secured put ties up thousands.
What do you give up with the spread?
Part of the credit (the long put costs money) and the willingness-to-own framing — if assigned on the short put you exit with a long put alongside, not with shares. Spread sellers are premium traders, not stock acquirers.
Which has the higher probability of profit?
The cash-secured put, slightly — no long leg to pay for means a closer breakeven. The spread compensates with better return on capital at defined risk.